252551620 has 12 divisors (see below), whose sum is σ = 530358444. Its totient is φ = 101020640.

The previous prime is 252551617. The next prime is 252551627. The reversal of 252551620 is 26155252.

It can be written as a sum of positive squares in 2 ways, for example, as 84382596 + 168169024 = 9186^2 + 12968^2 .

It is not an unprimeable number, because it can be changed into a prime (252551627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6313771 + ... + 6313810.

It is an arithmetic number, because the mean of its divisors is an integer number (44196537).

Almost surely, 2^252551620 is an apocalyptic number.

252551620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252551620 is an abundant number, since it is smaller than the sum of its proper divisors (277806824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252551620 is a wasteful number, since it uses less digits than its factorization.

252551620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12627590 (or 12627588 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 252551620 is about 15891.8727656623. The cubic root of 252551620 is about 632.0965009136.

It can be divided in two parts, 2525 and 51620, that added together give a palindrome (54145).

The spelling of 252551620 in words is "two hundred fifty-two million, five hundred fifty-one thousand, six hundred twenty".